Redang Island, Malaysia: vitamin D, best months and travel guide
Marine-park island with clear water and coral. Best for: divers, couples, families.
The best months for vitamin D in Redang Island are February to April, June, July, October, when a full dose takes about 6 minutes at midday. Rainy or stormy in May and from August to September and from November to January.
Redang Island month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Bad weather | 7.0 h | 7.0 | 8 min | 27°C | 19/30 |
| February | Excellent | 8.4 h | 8.8 | 6 min | 28°C | 6/30 |
| March | Excellent | 8.6 h | 9.3 | 6 min | 28°C | 13/30 |
| April | Excellent | 8.6 h | 9.0 | 6 min | 30°C | 13/30 |
| May | Bad weather | 8.0 h | 8.2 | 7 min | 30°C | 19/30 |
| June | Excellent | 7.8 h | 7.8 | 7 min | 30°C | 15/30 |
| July | Excellent | 7.4 h | 7.5 | 7 min | 29°C | 16/30 |
| August | Bad weather | 8.2 h | 8.6 | 6 min | 29°C | 21/30 |
| September | Bad weather | 7.5 h | 8.1 | 7 min | 29°C | 20/30 |
| October | Excellent | 7.1 h | 7.6 | 7 min | 29°C | 17/30 |
| November | Bad weather | 6.0 h | 6.5 | 8 min | 28°C | 30/30 |
| December | Bad weather | 6.1 h | 6.5 | 8 min | 28°C | 22/30 |
Sun window is the number of hours a day with UV Index 2.5 or higher. Full dose is the minutes at midday for about 1,000 IU of vitamin D with a quarter of the body bare, for skin type III. Rainy days are days with at least 1 mm out of 30.
What to expect in Redang Island
Marine-park island with clear water and coral. Hot and humid all year with afternoon storms. The east coast islands (Perhentian, Redang, Tioman) close in the monsoon from November to February, while the west coast (Langkawi, Penang) is wetter around September and October.
In Redang Island afternoon highs average from 27°C in January to 30°C in May. The wettest month is November (about 30 rainy days out of 30) and the driest is February (6). Midday UV peaks at 9.3 in March, which is very strong, so protect your skin.
More about Malaysia · Malaysia in February · Best places in February
Questions about Redang Island
When is the best time to visit Redang Island for vitamin D?
The best months for vitamin D in Redang Island are February to April, June, July, October, when a full dose takes about 6 minutes at midday.
What is the weather like in Redang Island?
Afternoon highs average from 27°C in January to 30°C in May. The wettest month is November, with about 30 rainy days out of 30.
Which months should I avoid in Redang Island?
For a beach stay, avoid the months when it is rainy or stormy in May and from August to September and from November to January.